Cite

Official map of the Penna. oil region ; showing the southwestern portion of Warren County.

MLA

Official Map of the Penna. Oil Region ; Showing the Southwestern Portion of Warren County. A.H. Meuller, Lith. , 1917. https://collections.library.yale.edu/catalog/15874733.

APA, 6th edition

Official map of the Penna. oil region ; showing the southwestern portion of Warren County. (1917). [Maps]. A.H. Meuller, Lith. , https://collections.library.yale.edu/catalog/15874733.